Those gamblers can aim for profit, but they need to realize the other thing, such as luck, because no matter what, we need the luck to profit from gambling games. And with discipline and self-control, that will make us know when to stop playing and do not spend more money because that will add more risk. Playing gambling with a small budget is okay as we are afraid to lose much money, which the gambler should do. As long as we can manage the money for playing gambling, that will not be a problem.
This is basically just the extra part of the world of gambling instead of the usual known things. Sure luck plays a part for everyone but there is no need to say that if it works for everyone, we need to focus on the fact that experience and talent plays a big role because that is not at everyone, it is only applied to certain people.
These are not really very important things in life that you should be focusing on of course, it is gambling and you should only leave a small amount of time to gambling, if you make it a big deal for you then you are not going to be happy with the result neither, it is going to bog you down and it will make you miserable. Any veteran would know that if you are gambling more frequently than 2 days a week then you are making gambling a life style and that is going to hurt you in the long run, nobody would want that to happen.